Should be fine on most of that. By shaft, I assume u mean barrel. As long as threads are cocker, no worries - I use a dye ul on my etek. Trigger, feed neck and eye covers to my understanding did not change.

LPR is the only one I would question. There is a guy on here aresfiend, that I would ask about that.

By "reg thing" I assume u mean the actual reg, right? Again, I would check with ares on that.